ICESat-2 Por Los Números: 90

The video tutorial explains how lasers are used to measure slopes in a single satellite pass. It covers the path of the Atlas laser and the setup involving three pairs of aces separated by 90 meters. The tutorial details how scientists calculate elevation changes even if the laser beams are slightly off from their initial positions.

What does the term 'reference track' refer to in the context of this measurement?

Explain how scientists have been able to calculate the elevation change of the track.